EP1282263A3 - Method and system for securely timestamping digital data - Google Patents

Method and system for securely timestamping digital data Download PDF

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Publication number
EP1282263A3
EP1282263A3 EP02078166A EP02078166A EP1282263A3 EP 1282263 A3 EP1282263 A3 EP 1282263A3 EP 02078166 A EP02078166 A EP 02078166A EP 02078166 A EP02078166 A EP 02078166A EP 1282263 A3 EP1282263 A3 EP 1282263A3
Authority
EP
European Patent Office
Prior art keywords
digital data
encryption key
timestamping
secure encryption
mode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02078166A
Other languages
German (de)
French (fr)
Other versions
EP1282263A2 (en
EP1282263B1 (en
Inventor
Bruno Couillard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chrysalis ITS Inc
Original Assignee
Chrysalis ITS Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chrysalis ITS Inc filed Critical Chrysalis ITS Inc
Publication of EP1282263A2 publication Critical patent/EP1282263A2/en
Publication of EP1282263A3 publication Critical patent/EP1282263A3/en
Application granted granted Critical
Publication of EP1282263B1 publication Critical patent/EP1282263B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash

Abstract

A method and system for securely timestamping digital data is disclosed. A secure encryption key is provided within a timestamping module. The timestamping module comprises a processor for performing security functions with the secure encryption key. The processor is operable in a first mode wherein the secure encryption key is used for encryption operations and for test operations and in a second mode in which the secure encryption key is only used for timestamping operations. Once the processor performs a function with the secure encryption key in the second mode it is precluded from performing further functions in the first mode with the secure encryption key. After the processor has been placed in the second mode of operation a unique code for being embedded within timestamped digital data is generated. Data indicative of a real time a request for a timestamping operation has been received is then provided to the processor from a real time clock. Based on the data indicative of a real time a timestamp is generated using the secure encryption key. The timestamp is embedded within the digital data and the unique code is inserted within the digital data. The digital data with the inserted data therein are then encoded to form timestamped digital data. Upon receipt of the securely timestamped digital data the unique code is retrieved from the securely timestamped digital data in order to verify the authenticity of the time data.
EP02078166A 2001-08-02 2002-08-01 Method and system for securely timestamping digital data Expired - Lifetime EP1282263B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US919958 1986-10-23
US09/919,958 US7328348B2 (en) 2001-08-02 2001-08-02 Method and system for securely timestamping digital data

Publications (3)

Publication Number Publication Date
EP1282263A2 EP1282263A2 (en) 2003-02-05
EP1282263A3 true EP1282263A3 (en) 2003-11-19
EP1282263B1 EP1282263B1 (en) 2005-11-30

Family

ID=25442936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02078166A Expired - Lifetime EP1282263B1 (en) 2001-08-02 2002-08-01 Method and system for securely timestamping digital data

Country Status (3)

Country Link
US (1) US7328348B2 (en)
EP (1) EP1282263B1 (en)
DE (1) DE60207645D1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0122169D0 (en) * 2001-09-13 2001-10-31 Ncipher Corp Ltd Digital time stamping system
US6959297B2 (en) 2002-04-25 2005-10-25 Winnow Technology, Llc System and process for searching within a data stream using a pointer matrix and a trap matrix
US7861088B1 (en) * 2002-12-10 2010-12-28 Verizon Laboratories Inc. Method and system for verifiably recording voice communications
US7486673B2 (en) 2005-08-29 2009-02-03 Connect Technologies Corporation Method and system for reassembling packets prior to searching
US7719996B2 (en) * 2006-09-25 2010-05-18 Hewlett-Packard Development Company, L.P. Encoding timestamps
US8203431B2 (en) 2007-02-14 2012-06-19 Nxp B.V. Method of processing data, electronic device and transponder
US9830366B2 (en) * 2008-03-22 2017-11-28 Thomson Reuters Global Resources Online analytic processing cube with time stamping
US8099602B2 (en) * 2008-09-26 2012-01-17 Mykonos Software, Inc. Methods for integrating security in network communications and systems thereof
US20100241533A1 (en) * 2009-03-23 2010-09-23 Li Ho Tax data validity documentation
US9922332B2 (en) * 2009-12-09 2018-03-20 Robert Sant'Anselmo Digital signatory and time stamping notary service for documents and objects
US10448123B1 (en) 2018-07-02 2019-10-15 The Nielsen Company (Us), Llc Methods and apparatus to extend a timestamp range supported by a watermark
US10448122B1 (en) 2018-07-02 2019-10-15 The Nielsen Company (Us), Llc Methods and apparatus to extend a timestamp range supported by a watermark
CN113615227A (en) 2019-01-10 2021-11-05 Mhm微技术责任有限公司 Network connectable sensing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0422757A2 (en) * 1989-10-13 1991-04-17 Addison M. Fischer Public/key date-time notary facility
WO1992012485A1 (en) * 1991-01-07 1992-07-23 Blandford Robert R Devices to (1) supply authenticated time and (2) time stamp and authenticate digital documents
US5923763A (en) * 1996-03-21 1999-07-13 Walker Asset Management Limited Partnership Method and apparatus for secure document timestamping

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966446A (en) * 1995-09-29 1999-10-12 Intel Corporation Time-bracketing infrastructure implementation
US5949879A (en) * 1996-09-06 1999-09-07 Pitney Bowes Inc. Auditable security system for the generation of cryptographically protected digital data
US5956404A (en) * 1996-09-30 1999-09-21 Schneier; Bruce Digital signature with auditing bits
EP1056015A4 (en) * 1998-01-21 2005-01-05 Tokyo Electron Ltd Storage device, encrypting/decrypting device, and method for accessing nonvolatile memory
US6466048B1 (en) * 2001-05-23 2002-10-15 Mosaid Technologies, Inc. Method and apparatus for switchably selecting an integrated circuit operating mode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0422757A2 (en) * 1989-10-13 1991-04-17 Addison M. Fischer Public/key date-time notary facility
WO1992012485A1 (en) * 1991-01-07 1992-07-23 Blandford Robert R Devices to (1) supply authenticated time and (2) time stamp and authenticate digital documents
US5923763A (en) * 1996-03-21 1999-07-13 Walker Asset Management Limited Partnership Method and apparatus for secure document timestamping

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GENG-SHENG KUO ET AL: "Predictable timestamp under synchronized clocks in a network", INFORMATION THEORY, 1994. PROCEEDINGS., 1994 IEEE INTERNATIONAL SYMPOSIUM ON TRONDHEIM, NORWAY 27 JUNE-1 JULY 1994, NEW YORK, NY, USA,IEEE, 27 June 1994 (1994-06-27), pages 68, XP010135137, ISBN: 0-7803-2015-8 *

Also Published As

Publication number Publication date
US7328348B2 (en) 2008-02-05
EP1282263A2 (en) 2003-02-05
DE60207645D1 (en) 2006-01-05
EP1282263B1 (en) 2005-11-30
US20030028778A1 (en) 2003-02-06

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